Power-hammer.



w. MASILLAN POWER HAMMER. APPLICATION FILED FEB- 28.191?- 1,263,267. Patented Apr. 16, 1918.

3 SHEETS-SHEET I.

5 I5- L WITNESSES w///]77 A Z INVENTOR AT TORNEY W. MASILLAN.

POWER HAMMER.

APPLICATION FILED FEB. 28. I917.

1,263,267.. Patented Apr. 16, 1918.-

3 SHEETS-SHEET 2.

, D INVENTOR WITNESSES 677 ATTORNEY WITNESSES [I w. MASILLAN.

POWER HAMMER. APPLICATION F lLE D FEB. 28. 1917- 1,263,267. V 1 Patented Apr. 16, 1918.

3 SHEETS-SHEET 3- I'NVENTOR g I ATTORNEY UNI WILLIAM MASILLAIN', OF RAYMONID, WASHINGTON.

' POWER-HAMMER.

Specification of Letters Patent. Patented Apr. 16, 1918.

Application filed February 28, 1917. Serial No. 151,551.

mers or the like and has for an object to provide a machine capable of operating upon light work as well as heavy work and of a simple and durable construction.

Another object of the invention is to provide a power hammer of a nature adapted to be operated through the agency of an electric motor.

A still further object of'the invention is to provide a power hammer having the above named characteristics and embodying means controllable'manually whereby the hammer may be continually raised and dropped in a continuous reciprocatory motionfor forging or the like, or whereby the hammer may be raised and releasably retained in raised position, until the work is properly adjusted for the descent of the hammer.

In addition to the foregoing my invention comprehends improvements in the details of construction and arrangement of'the parts to be hereinafter more fully described and particularly set forth in the appended claim.

In the accompanying drawings in which similar and corresponding parts are designated by the same characters of reference throughout the several views in which they appear:

Figurel, is a view in front elevation of a power hammer constructed after the man ner of my invention.

Fig. 2, is a view thereof in vertical sec tion.

Fig. 3, isa horizontal section taken on the line 3-3 of Fig. 1.

Fig. 4, is a detail view of the controlling mechanism, and

Fig. 5,.is'a detail sectiontaken on the line 5-5 of Fig. 1.

With reference to the drawings 10 and 11 indicate respectively the front and'rear corner posts of the frame work of my improved power hammer, said posts being connected at their upper ends through the mediumof horizontal connecting beams 12. An anvil block 13 is provided at the front of the frame work between the front corner posts 10 and said posts may be connected to the block to provide a more rigid and durable The anvil may also be con nected to the rear posts through the me' frame work.

dium of horizontal braces 14.

Depending from the front horizontal beam 12 is a pair of transversely spaced guide members '15 mounted in vertical alinement above the block 13 and is provided at opposite innermost faces with vertically extending grooves 16. The lower ends of the guides are extendedin opposite directions as indicated at 17 and secured to the corner post 10 through the medium of bolts or the like 18. Mounted for vertical reciprocatory movement within the guides 15 is a shank 19 of a power hammer having at its lower end a hammer head 20. The member 13 may serve as a block upon which to support an anvil pro-per designated 21 secured to the block through the medium of blocks or the like 22 upon which the hammer head 20 is designed to strike. The rear face of the shank 19 is provided with a vertically spaced series of rack teeth 23, while the forward face of the shank is provided with a series of vertically spaced ratchet teeth 24 with their inclined faces extending downward.

The guides 15 are formed at the front and rear edges with enlargements 25 and 26 respectively, in which to support for rotation transversely extending shafts 27 and 28. The shaft 28 is provided with a mutilated gear 29 having a portion of its periphery cut away as at 30 and designed to engage during the remainder of its periphery the rack teeth 23 of the shank 19, and to become disengaged from the shank when the cut away portion 30 is disposed adjacent thereto. The ends of the shaft 28 are also mounted in bearings 31 mounted upon the rear faces of the corner posts 10 and provided upon the end of the shaft 28 extending beyond one of said bearings is a relatively large spur gear 32, adapted for meshing engagement with the smaller spur gear 33, mounted upon the end of a horizontal transversely extending shaft 34 journaled for rotation in bearings 25 mounted upon horizontal beams 26 connecting the front and rear corner posts. The shaft 24 at its opposite end is designed to support a groove pulley 27 around which a belt or the like 28 is passed, said belt also passing around the pulley of an electric motor of conventional type indicated at 39, and which may be mounted upon a platform provided at the upper portion of the frame work.

The front shaft 27 is provided at its portion extending between the bearings 25 with a pawl 40 for engaging the series of ratchet teeth 24 and one end of the shaft is extended beyond the bearings 25 and mounted in a bearing 41 provided upon the front face of one of the corner posts 10. Also mounted upon the shaft 27 is a bell crank 42 having one arm 43 extended forwardly and its other arm 44 extended rearwardly and connected through the medium of a coil spring 45 to a horizontal transversely extending brace beam 46 connecting the inner faces of the front corner posts. An arm 47 is extended forwardly from. the corner post 10 upon which the bearing 41 is mounted and is provided with a hooked terminal 48, the said bar 47 being suitably braced through the medium of braces 49 formed therewith and also connected to said corner posts. A rod is depended from the terminal of the arm 43 of the bell crank 42, said rod being formed in sections 49 connected through the medium of a ring 50, for a purpose which will be presently obvious.

In operation, the motor is energized through a switch or other controlling means which I have not illustrated but which may be of conventional design and should it be desired to impart a continued series of vertically reciprocatory movements to the hammer, it is but necessary to pull down upon the section 49 of the rod which depends from the bell crank 42 and engage the ring 50 thereof upon the hooked terminal 48 of the rod or bar 47. As a result of this movement the pawl 40 is withdrawn from engagement with the series of ratchet teeth 24 of the hammer shank whereupon motion of the motor will be transmitted along the belt 28 to the groove pulley 37, and through the agency of the shank 34 upon which it is secured to the gearing 32 and 33. The mutilated gear 39 will thus be rotated in a clockwise direction with the result that the hammer is raised, the teeth of the mutilated gear and the rack teeth of the hammer shank becoming engaged thereby raising the hammer until the mutilated portion 30 of the gear ,29 is brought opposite the hammer shank whereupon the shank will become disengaged and fall by gravity upon the work upon the anvil 21. During further rotation of the mutilated gear 29 the shank will be again engaged and raised with a repetition of the former operation. The shank of the motor may be adjusted with reference to the rate at which the hammer falls so as to secure any rapidity of reciprocation within certain limits.

Should it be desired to raise the hammer and to retain the same in raised position, preparatory to adjusting thework there beneath, it is but necessary to disengagethe ring from the bar 47, whereupon the pawl 40 will be held in engagement with the ratchet teeth of the hammer shank. If the motor is then energized, the hammer will be raised and retained in its uppermost position. The motor should be stopped when the cut away portion of the gear 29 is opposite the shank, whereupon, to cause the hammer to descend, it is but necessary to oscillate the bell crank 42 and to withdraw the pawl from engagement with the ratchet teeth "of the shank.

To insure movement of the hammer in a predetermined direction and to. prevent rotation thereof, lugs 51 may be formed upon the side of the shank for engagement in the vertical grooves 16 of the guide 15 mentioned above.

Thus it will be seen that I have provided a very simple form of machine adapted for light work as well as heavy work and which may operate continuously without requiring the attention of the operator, thereby permitting the operator to devote all his attention to adjusting the work beneath the hammer.

While I have illustrated and described my invention with some degree of particularity, I realize that in practice various alterations thereover may be made, and I therefore reserve the right and privilege of changing the form of the details of construction, or otherwise altering the arrangement of the correlated parts without departing from the spirit of the invention or the scope of the appended claim.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

In a power hammer, a frame, an anvil, a hammer head providedwith a shank, means for guiding the shank for vertical reciprocation, said shank having a series of rack teeth upon one vertical face, and aseries of ratchet teeth upon the other vertical face, a mutilated gear for engaging the rack teeth, gearing for rotating said mutilated gear whereby the hammer may be raised and automatically released to permit its descent by In testimony whereof I affix my signature gravity, and a pawl mechanlsni for engaging in presence of tWo wltnesses.

the ratchet teeth whereby if desired the WILLIAM MASILLAN. shank may be retained in its raised position Witnesses:

and subsequently permitted to descend upon E. F. RHODES,

disengagement of said pawl. MARY L. HEDDEN.

fiopiee of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. 0. 

